Skip to content

S
spdlog
Commit 6128a87d authored by gabime's avatar gabime
Browse files
Options

Fix issue #300

parent 69878386
Hide whitespace changes
Inline Side-by-side
Showing with 5346 additions and 5810 deletions
example/example.vcxproj
View file @ 6128a87d
......@@ -56,13 +56,13 @@
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
<ConfigurationType>Application</ConfigurationType>
<UseDebugLibraries>true</UseDebugLibraries>
<PlatformToolset>v140</PlatformToolset>
<PlatformToolset>v120</PlatformToolset>
<CharacterSet>Unicode</CharacterSet>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
<ConfigurationType>Application</ConfigurationType>
<UseDebugLibraries>false</UseDebugLibraries>
<PlatformToolset>v140</PlatformToolset>
<PlatformToolset>v120</PlatformToolset>
<WholeProgramOptimization>true</WholeProgramOptimization>
<CharacterSet>Unicode</CharacterSet>
</PropertyGroup>
......
include/spdlog/fmt/bundled/format.cc
View file @ 6128a87d
/*
Formatting library for C++
Copyright (c) 2012 - 2016, Victor Zverovich
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// Commented out by spdlog to use header only
// #include "fmt/format.h"
// #include "fmt/printf.h"
#include <string.h>
#include <cctype>
#include <cerrno>
#include <climits>
#include <cmath>
#include <cstdarg>
#include <cstddef> // for std::ptrdiff_t
#if defined(_WIN32) && defined(__MINGW32__)
# include <cstring>
#endif
#if FMT_USE_WINDOWS_H
# if defined(NOMINMAX) || defined(FMT_WIN_MINMAX)
# include <windows.h>
# else
# define NOMINMAX
# include <windows.h>
# undef NOMINMAX
# endif
#endif
using fmt::internal::Arg;
#if FMT_EXCEPTIONS
# define FMT_TRY try
# define FMT_CATCH(x) catch (x)
#else
# define FMT_TRY if (true)
# define FMT_CATCH(x) if (false)
#endif
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable: 4127) // conditional expression is constant
# pragma warning(disable: 4702) // unreachable code
// Disable deprecation warning for strerror. The latter is not called but
// MSVC fails to detect it.
# pragma warning(disable: 4996)
#endif
// Dummy implementations of strerror_r and strerror_s called if corresponding
// system functions are not available.
static inline fmt::internal::Null<> strerror_r(int, char *, ...) {
return fmt::internal::Null<>();
}
static inline fmt::internal::Null<> strerror_s(char *, std::size_t, ...) {
return fmt::internal::Null<>();
}
namespace fmt {
FMT_FUNC internal::RuntimeError::~RuntimeError() throw() {}
FMT_FUNC FormatError::~FormatError() throw() {}
FMT_FUNC SystemError::~SystemError() throw() {}
namespace {
#ifndef _MSC_VER
# define FMT_SNPRINTF snprintf
#else // _MSC_VER
inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) {
va_list args;
va_start(args, format);
int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args);
va_end(args);
return result;
}
# define FMT_SNPRINTF fmt_snprintf
#endif // _MSC_VER
#if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
# define FMT_SWPRINTF snwprintf
#else
# define FMT_SWPRINTF swprintf
#endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
const char RESET_COLOR[] = "\x1b[0m";
typedef void (*FormatFunc)(Writer &, int, StringRef);
// Portable thread-safe version of strerror.
// Sets buffer to point to a string describing the error code.
// This can be either a pointer to a string stored in buffer,
// or a pointer to some static immutable string.
// Returns one of the following values:
// 0 - success
// ERANGE - buffer is not large enough to store the error message
// other - failure
// Buffer should be at least of size 1.
int safe_strerror(
int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT {
FMT_ASSERT(buffer != 0 && buffer_size != 0, "invalid buffer");
class StrError {
private:
int error_code_;
char *&buffer_;
std::size_t buffer_size_;
// A noop assignment operator to avoid bogus warnings.
void operator=(const StrError &) {}
// Handle the result of XSI-compliant version of strerror_r.
int handle(int result) {
// glibc versions before 2.13 return result in errno.
return result == -1 ? errno : result;
}
// Handle the result of GNU-specific version of strerror_r.
int handle(char *message) {
// If the buffer is full then the message is probably truncated.
if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1)
return ERANGE;
buffer_ = message;
return 0;
}
// Handle the case when strerror_r is not available.
int handle(internal::Null<>) {
return fallback(strerror_s(buffer_, buffer_size_, error_code_));
}
// Fallback to strerror_s when strerror_r is not available.
int fallback(int result) {
// If the buffer is full then the message is probably truncated.
return result == 0 && strlen(buffer_) == buffer_size_ - 1 ?
ERANGE : result;
}
// Fallback to strerror if strerror_r and strerror_s are not available.
int fallback(internal::Null<>) {
errno = 0;
buffer_ = strerror(error_code_);
return errno;
}
public:
StrError(int err_code, char *&buf, std::size_t buf_size)
: error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {}
int run() {
strerror_r(0, 0, ""); // Suppress a warning about unused strerror_r.
return handle(strerror_r(error_code_, buffer_, buffer_size_));
}
};
return StrError(error_code, buffer, buffer_size).run();
}
void format_error_code(Writer &out, int error_code,
StringRef message) FMT_NOEXCEPT {
// Report error code making sure that the output fits into
// INLINE_BUFFER_SIZE to avoid dynamic memory allocation and potential
// bad_alloc.
out.clear();
static const char SEP[] = ": ";
static const char ERROR_STR[] = "error ";
// Subtract 2 to account for terminating null characters in SEP and ERROR_STR.
std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2;
typedef internal::IntTraits<int>::MainType MainType;
MainType abs_value = static_cast<MainType>(error_code);
if (internal::is_negative(error_code)) {
abs_value = 0 - abs_value;
++error_code_size;
}
error_code_size += internal::count_digits(abs_value);
if (message.size() <= internal::INLINE_BUFFER_SIZE - error_code_size)
out << message << SEP;
out << ERROR_STR << error_code;
assert(out.size() <= internal::INLINE_BUFFER_SIZE);
}
void report_error(FormatFunc func, int error_code,
StringRef message) FMT_NOEXCEPT {
MemoryWriter full_message;
func(full_message, error_code, message);
// Use Writer::data instead of Writer::c_str to avoid potential memory
// allocation.
std::fwrite(full_message.data(), full_message.size(), 1, stderr);
std::fputc('\n', stderr);
}
} // namespace
namespace internal {
// This method is used to preserve binary compatibility with fmt 3.0.
// It can be removed in 4.0.
FMT_FUNC void format_system_error(
Writer &out, int error_code, StringRef message) FMT_NOEXCEPT {
fmt::format_system_error(out, error_code, message);
}
} // namespace internal
FMT_FUNC void SystemError::init(
int err_code, CStringRef format_str, ArgList args) {
error_code_ = err_code;
MemoryWriter w;
format_system_error(w, err_code, format(format_str, args));
std::runtime_error &base = *this;
base = std::runtime_error(w.str());
}
template <typename T>
int internal::CharTraits<char>::format_float(
char *buffer, std::size_t size, const char *format,
unsigned width, int precision, T value) {
if (width == 0) {
return precision < 0 ?
FMT_SNPRINTF(buffer, size, format, value) :
FMT_SNPRINTF(buffer, size, format, precision, value);
}
return precision < 0 ?
FMT_SNPRINTF(buffer, size, format, width, value) :
FMT_SNPRINTF(buffer, size, format, width, precision, value);
}
template <typename T>
int internal::CharTraits<wchar_t>::format_float(
wchar_t *buffer, std::size_t size, const wchar_t *format,
unsigned width, int precision, T value) {
if (width == 0) {
return precision < 0 ?
FMT_SWPRINTF(buffer, size, format, value) :
FMT_SWPRINTF(buffer, size, format, precision, value);
}
return precision < 0 ?
FMT_SWPRINTF(buffer, size, format, width, value) :
FMT_SWPRINTF(buffer, size, format, width, precision, value);
}
template <typename T>
const char internal::BasicData<T>::DIGITS[] =
"0001020304050607080910111213141516171819"
"2021222324252627282930313233343536373839"
"4041424344454647484950515253545556575859"
"6061626364656667686970717273747576777879"
"8081828384858687888990919293949596979899";
#define FMT_POWERS_OF_10(factor) \
factor * 10, \
factor * 100, \
factor * 1000, \
factor * 10000, \
factor * 100000, \
factor * 1000000, \
factor * 10000000, \
factor * 100000000, \
factor * 1000000000
template <typename T>
const uint32_t internal::BasicData<T>::POWERS_OF_10_32[] = {
0, FMT_POWERS_OF_10(1)
};
template <typename T>
const uint64_t internal::BasicData<T>::POWERS_OF_10_64[] = {
0,
FMT_POWERS_OF_10(1),
FMT_POWERS_OF_10(ULongLong(1000000000)),
// Multiply several constants instead of using a single long long constant
// to avoid warnings about C++98 not supporting long long.
ULongLong(1000000000) * ULongLong(1000000000) * 10
};
FMT_FUNC void internal::report_unknown_type(char code, const char *type) {
(void)type;
if (std::isprint(static_cast<unsigned char>(code))) {
FMT_THROW(FormatError(
format("unknown format code '{}' for {}", code, type)));
}
FMT_THROW(FormatError(
format("unknown format code '\\x{:02x}' for {}",
static_cast<unsigned>(code), type)));
}
#if FMT_USE_WINDOWS_H
FMT_FUNC internal::UTF8ToUTF16::UTF8ToUTF16(StringRef s) {
static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16";
if (s.size() > INT_MAX)
FMT_THROW(WindowsError(ERROR_INVALID_PARAMETER, ERROR_MSG));
int s_size = static_cast<int>(s.size());
int length = MultiByteToWideChar(
CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, 0, 0);
if (length == 0)
FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
buffer_.resize(length + 1);
length = MultiByteToWideChar(
CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length);
if (length == 0)
FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
buffer_[length] = 0;
}
FMT_FUNC internal::UTF16ToUTF8::UTF16ToUTF8(WStringRef s) {
if (int error_code = convert(s)) {
FMT_THROW(WindowsError(error_code,
"cannot convert string from UTF-16 to UTF-8"));
}
}
FMT_FUNC int internal::UTF16ToUTF8::convert(WStringRef s) {
if (s.size() > INT_MAX)
return ERROR_INVALID_PARAMETER;
int s_size = static_cast<int>(s.size());
int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, 0, 0, 0, 0);
if (length == 0)
return GetLastError();
buffer_.resize(length + 1);
length = WideCharToMultiByte(
CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, 0, 0);
if (length == 0)
return GetLastError();
buffer_[length] = 0;
return 0;
}
FMT_FUNC void WindowsError::init(
int err_code, CStringRef format_str, ArgList args) {
error_code_ = err_code;
MemoryWriter w;
internal::format_windows_error(w, err_code, format(format_str, args));
std::runtime_error &base = *this;
base = std::runtime_error(w.str());
}
FMT_FUNC void internal::format_windows_error(
Writer &out, int error_code, StringRef message) FMT_NOEXCEPT {
FMT_TRY {
MemoryBuffer<wchar_t, INLINE_BUFFER_SIZE> buffer;
buffer.resize(INLINE_BUFFER_SIZE);
for (;;) {
wchar_t *system_message = &buffer[0];
int result = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
0, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
system_message, static_cast<uint32_t>(buffer.size()), 0);
if (result != 0) {
UTF16ToUTF8 utf8_message;
if (utf8_message.convert(system_message) == ERROR_SUCCESS) {
out << message << ": " << utf8_message;
return;
}
break;
}
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
break; // Can't get error message, report error code instead.
buffer.resize(buffer.size() * 2);
}
} FMT_CATCH(...) {}
fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32.
}
#endif // FMT_USE_WINDOWS_H
FMT_FUNC void format_system_error(
Writer &out, int error_code, StringRef message) FMT_NOEXCEPT {
FMT_TRY {
internal::MemoryBuffer<char, internal::INLINE_BUFFER_SIZE> buffer;
buffer.resize(internal::INLINE_BUFFER_SIZE);
for (;;) {
char *system_message = &buffer[0];
int result = safe_strerror(error_code, system_message, buffer.size());
if (result == 0) {
out << message << ": " << system_message;
return;
}
if (result != ERANGE)
break; // Can't get error message, report error code instead.
buffer.resize(buffer.size() * 2);
}
} FMT_CATCH(...) {}
fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32.
}
template <typename Char>
void internal::ArgMap<Char>::init(const ArgList &args) {
if (!map_.empty())
return;
typedef internal::NamedArg<Char> NamedArg;
const NamedArg *named_arg = 0;
bool use_values =
args.type(ArgList::MAX_PACKED_ARGS - 1) == internal::Arg::NONE;
if (use_values) {
for (unsigned i = 0;/*nothing*/; ++i) {
internal::Arg::Type arg_type = args.type(i);
switch (arg_type) {
case internal::Arg::NONE:
return;
case internal::Arg::NAMED_ARG:
named_arg = static_cast<const NamedArg*>(args.values_[i].pointer);
map_.push_back(Pair(named_arg->name, *named_arg));
break;
default:
/*nothing*/;
}
}
return;
}
for (unsigned i = 0; i != ArgList::MAX_PACKED_ARGS; ++i) {
internal::Arg::Type arg_type = args.type(i);
if (arg_type == internal::Arg::NAMED_ARG) {
named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
map_.push_back(Pair(named_arg->name, *named_arg));
}
}
for (unsigned i = ArgList::MAX_PACKED_ARGS;/*nothing*/; ++i) {
switch (args.args_[i].type) {
case internal::Arg::NONE:
return;
case internal::Arg::NAMED_ARG:
named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
map_.push_back(Pair(named_arg->name, *named_arg));
break;
default:
/*nothing*/;
}
}
}
template <typename Char>
void internal::FixedBuffer<Char>::grow(std::size_t) {
FMT_THROW(std::runtime_error("buffer overflow"));
}
FMT_FUNC Arg internal::FormatterBase::do_get_arg(
unsigned arg_index, const char *&error) {
Arg arg = args_[arg_index];
switch (arg.type) {
case Arg::NONE:
error = "argument index out of range";
break;
case Arg::NAMED_ARG:
arg = *static_cast<const internal::Arg*>(arg.pointer);
break;
default:
/*nothing*/;
}
return arg;
}
FMT_FUNC void report_system_error(
int error_code, fmt::StringRef message) FMT_NOEXCEPT {
// 'fmt::' is for bcc32.
report_error(format_system_error, error_code, message);
}
#if FMT_USE_WINDOWS_H
FMT_FUNC void report_windows_error(
int error_code, fmt::StringRef message) FMT_NOEXCEPT {
// 'fmt::' is for bcc32.
report_error(internal::format_windows_error, error_code, message);
}
#endif
FMT_FUNC void print(std::FILE *f, CStringRef format_str, ArgList args) {
MemoryWriter w;
w.write(format_str, args);
std::fwrite(w.data(), 1, w.size(), f);
}
FMT_FUNC void print(CStringRef format_str, ArgList args) {
print(stdout, format_str, args);
}
FMT_FUNC void print_colored(Color c, CStringRef format, ArgList args) {
char escape[] = "\x1b[30m";
escape[3] = static_cast<char>('0' + c);
std::fputs(escape, stdout);
print(format, args);
std::fputs(RESET_COLOR, stdout);
}
template <typename Char>
void printf(BasicWriter<Char> &w, BasicCStringRef<Char> format, ArgList args);
FMT_FUNC int fprintf(std::FILE *f, CStringRef format, ArgList args) {
MemoryWriter w;
printf(w, format, args);
std::size_t size = w.size();
return std::fwrite(w.data(), 1, size, f) < size ? -1 : static_cast<int>(size);
}
#ifndef FMT_HEADER_ONLY
template struct internal::BasicData<void>;
// Explicit instantiations for char.
template void internal::FixedBuffer<char>::grow(std::size_t);
template void internal::ArgMap<char>::init(const ArgList &args);
template void PrintfFormatter<char>::format(CStringRef format);
template int internal::CharTraits<char>::format_float(
char *buffer, std::size_t size, const char *format,
unsigned width, int precision, double value);
template int internal::CharTraits<char>::format_float(
char *buffer, std::size_t size, const char *format,
unsigned width, int precision, long double value);
// Explicit instantiations for wchar_t.
template void internal::FixedBuffer<wchar_t>::grow(std::size_t);
template void internal::ArgMap<wchar_t>::init(const ArgList &args);
template void PrintfFormatter<wchar_t>::format(WCStringRef format);
template int internal::CharTraits<wchar_t>::format_float(
wchar_t *buffer, std::size_t size, const wchar_t *format,
unsigned width, int precision, double value);
template int internal::CharTraits<wchar_t>::format_float(
wchar_t *buffer, std::size_t size, const wchar_t *format,
unsigned width, int precision, long double value);
#endif // FMT_HEADER_ONLY
} // namespace fmt
#ifdef _MSC_VER
# pragma warning(pop)
#endif
/*
Formatting library for C++
Copyright (c) 2012 - 2016, Victor Zverovich
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// commented out by spdlog
// #include "format.h"
// #include "printf.h"
#include <string.h>
#include <cctype>
#include <cerrno>
#include <climits>
#include <cmath>
#include <cstdarg>
#include <cstddef> // for std::ptrdiff_t
#if defined(_WIN32) && defined(__MINGW32__)
# include <cstring>
#endif
#if FMT_USE_WINDOWS_H
# if defined(NOMINMAX) || defined(FMT_WIN_MINMAX)
# include <windows.h>
# else
# define NOMINMAX
# include <windows.h>
# undef NOMINMAX
# endif
#endif
using fmt::internal::Arg;
#if FMT_EXCEPTIONS
# define FMT_TRY try
# define FMT_CATCH(x) catch (x)
#else
# define FMT_TRY if (true)
# define FMT_CATCH(x) if (false)
#endif
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable: 4127) // conditional expression is constant
# pragma warning(disable: 4702) // unreachable code
// Disable deprecation warning for strerror. The latter is not called but
// MSVC fails to detect it.
# pragma warning(disable: 4996)
#endif
// Dummy implementations of strerror_r and strerror_s called if corresponding
// system functions are not available.
static inline fmt::internal::Null<> strerror_r(int, char *, ...) {
return fmt::internal::Null<>();
}
static inline fmt::internal::Null<> strerror_s(char *, std::size_t, ...) {
return fmt::internal::Null<>();
}
namespace fmt {
FMT_FUNC internal::RuntimeError::~RuntimeError() throw() {}
FMT_FUNC FormatError::~FormatError() throw() {}
FMT_FUNC SystemError::~SystemError() throw() {}
namespace {
#ifndef _MSC_VER
# define FMT_SNPRINTF snprintf
#else // _MSC_VER
inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) {
va_list args;
va_start(args, format);
int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args);
va_end(args);
return result;
}
# define FMT_SNPRINTF fmt_snprintf
#endif // _MSC_VER
#if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
# define FMT_SWPRINTF snwprintf
#else
# define FMT_SWPRINTF swprintf
#endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
const char RESET_COLOR[] = "\x1b[0m";
typedef void(*FormatFunc)(Writer &, int, StringRef);
// Portable thread-safe version of strerror.
// Sets buffer to point to a string describing the error code.
// This can be either a pointer to a string stored in buffer,
// or a pointer to some static immutable string.
// Returns one of the following values:
// 0 - success
// ERANGE - buffer is not large enough to store the error message
// other - failure
// Buffer should be at least of size 1.
int safe_strerror(
int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT{
FMT_ASSERT(buffer != 0 && buffer_size != 0, "invalid buffer");
class StrError {
private:
int error_code_;
char *&buffer_;
std::size_t buffer_size_;
// A noop assignment operator to avoid bogus warnings.
void operator=(const StrError &) {}
// Handle the result of XSI-compliant version of strerror_r.
int handle(int result) {
// glibc versions before 2.13 return result in errno.
return result == -1 ? errno : result;
}
// Handle the result of GNU-specific version of strerror_r.
int handle(char *message) {
// If the buffer is full then the message is probably truncated.
if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1)
return ERANGE;
buffer_ = message;
return 0;
}
// Handle the case when strerror_r is not available.
int handle(internal::Null<>) {
return fallback(strerror_s(buffer_, buffer_size_, error_code_));
}
// Fallback to strerror_s when strerror_r is not available.
int fallback(int result) {
// If the buffer is full then the message is probably truncated.
return result == 0 && strlen(buffer_) == buffer_size_ - 1 ?
ERANGE : result;
}
// Fallback to strerror if strerror_r and strerror_s are not available.
int fallback(internal::Null<>) {
errno = 0;
buffer_ = strerror(error_code_);
return errno;
}
public:
StrError(int err_code, char *&buf, std::size_t buf_size)
: error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {}
int run() {
strerror_r(0, 0, ""); // Suppress a warning about unused strerror_r.
return handle(strerror_r(error_code_, buffer_, buffer_size_));
}
};
return StrError(error_code, buffer, buffer_size).run();
}
void format_error_code(Writer &out, int error_code,
StringRef message) FMT_NOEXCEPT{
// Report error code making sure that the output fits into
// INLINE_BUFFER_SIZE to avoid dynamic memory allocation and potential
// bad_alloc.
out.clear();
static const char SEP[] = ": ";
static const char ERROR_STR[] = "error ";
// Subtract 2 to account for terminating null characters in SEP and ERROR_STR.
std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2;
typedef internal::IntTraits<int>::MainType MainType;
MainType abs_value = static_cast<MainType>(error_code);
if (internal::is_negative(error_code)) {
abs_value = 0 - abs_value;
++error_code_size;
}
error_code_size += internal::count_digits(abs_value);
if (message.size() <= internal::INLINE_BUFFER_SIZE - error_code_size)
out << message << SEP;
out << ERROR_STR << error_code;
assert(out.size() <= internal::INLINE_BUFFER_SIZE);
}
void report_error(FormatFunc func, int error_code,
StringRef message) FMT_NOEXCEPT{
MemoryWriter full_message;
func(full_message, error_code, message);
// Use Writer::data instead of Writer::c_str to avoid potential memory
// allocation.
std::fwrite(full_message.data(), full_message.size(), 1, stderr);
std::fputc('\n', stderr);
}
} // namespace
namespace internal {
// This method is used to preserve binary compatibility with fmt 3.0.
// It can be removed in 4.0.
FMT_FUNC void format_system_error(
Writer &out, int error_code, StringRef message) FMT_NOEXCEPT{
fmt::format_system_error(out, error_code, message);
}
} // namespace internal
FMT_FUNC void SystemError::init(
int err_code, CStringRef format_str, ArgList args) {
error_code_ = err_code;
MemoryWriter w;
format_system_error(w, err_code, format(format_str, args));
std::runtime_error &base = *this;
base = std::runtime_error(w.str());
}
template <typename T>
int internal::CharTraits<char>::format_float(
char *buffer, std::size_t size, const char *format,
unsigned width, int precision, T value) {
if (width == 0) {
return precision < 0 ?
FMT_SNPRINTF(buffer, size, format, value) :
FMT_SNPRINTF(buffer, size, format, precision, value);
}
return precision < 0 ?
FMT_SNPRINTF(buffer, size, format, width, value) :
FMT_SNPRINTF(buffer, size, format, width, precision, value);
}
template <typename T>
int internal::CharTraits<wchar_t>::format_float(
wchar_t *buffer, std::size_t size, const wchar_t *format,
unsigned width, int precision, T value) {
if (width == 0) {
return precision < 0 ?
FMT_SWPRINTF(buffer, size, format, value) :
FMT_SWPRINTF(buffer, size, format, precision, value);
}
return precision < 0 ?
FMT_SWPRINTF(buffer, size, format, width, value) :
FMT_SWPRINTF(buffer, size, format, width, precision, value);
}
template <typename T>
const char internal::BasicData<T>::DIGITS[] =
"0001020304050607080910111213141516171819"
"2021222324252627282930313233343536373839"
"4041424344454647484950515253545556575859"
"6061626364656667686970717273747576777879"
"8081828384858687888990919293949596979899";
#define FMT_POWERS_OF_10(factor) \
factor * 10, \
factor * 100, \
factor * 1000, \
factor * 10000, \
factor * 100000, \
factor * 1000000, \
factor * 10000000, \
factor * 100000000, \
factor * 1000000000
template <typename T>
const uint32_t internal::BasicData<T>::POWERS_OF_10_32[] = {
0, FMT_POWERS_OF_10(1)
};
template <typename T>
const uint64_t internal::BasicData<T>::POWERS_OF_10_64[] = {
0,
FMT_POWERS_OF_10(1),
FMT_POWERS_OF_10(ULongLong(1000000000)),
// Multiply several constants instead of using a single long long constant
// to avoid warnings about C++98 not supporting long long.
ULongLong(1000000000) * ULongLong(1000000000) * 10
};
FMT_FUNC void internal::report_unknown_type(char code, const char *type) {
(void)type;
if (std::isprint(static_cast<unsigned char>(code))) {
FMT_THROW(FormatError(
format("unknown format code '{}' for {}", code, type)));
}
FMT_THROW(FormatError(
format("unknown format code '\\x{:02x}' for {}",
static_cast<unsigned>(code), type)));
}
#if FMT_USE_WINDOWS_H
FMT_FUNC internal::UTF8ToUTF16::UTF8ToUTF16(StringRef s) {
static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16";
if (s.size() > INT_MAX)
FMT_THROW(WindowsError(ERROR_INVALID_PARAMETER, ERROR_MSG));
int s_size = static_cast<int>(s.size());
int length = MultiByteToWideChar(
CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, 0, 0);
if (length == 0)
FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
buffer_.resize(length + 1);
length = MultiByteToWideChar(
CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length);
if (length == 0)
FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
buffer_[length] = 0;
}
FMT_FUNC internal::UTF16ToUTF8::UTF16ToUTF8(WStringRef s) {
if (int error_code = convert(s)) {
FMT_THROW(WindowsError(error_code,
"cannot convert string from UTF-16 to UTF-8"));
}
}
FMT_FUNC int internal::UTF16ToUTF8::convert(WStringRef s) {
if (s.size() > INT_MAX)
return ERROR_INVALID_PARAMETER;
int s_size = static_cast<int>(s.size());
int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, 0, 0, 0, 0);
if (length == 0)
return GetLastError();
buffer_.resize(length + 1);
length = WideCharToMultiByte(
CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, 0, 0);
if (length == 0)
return GetLastError();
buffer_[length] = 0;
return 0;
}
FMT_FUNC void WindowsError::init(
int err_code, CStringRef format_str, ArgList args) {
error_code_ = err_code;
MemoryWriter w;
internal::format_windows_error(w, err_code, format(format_str, args));
std::runtime_error &base = *this;
base = std::runtime_error(w.str());
}
FMT_FUNC void internal::format_windows_error(
Writer &out, int error_code, StringRef message) FMT_NOEXCEPT{
FMT_TRY{
MemoryBuffer<wchar_t, INLINE_BUFFER_SIZE> buffer;
buffer.resize(INLINE_BUFFER_SIZE);
for (;;) {
wchar_t *system_message = &buffer[0];
int result = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
0, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
system_message, static_cast<uint32_t>(buffer.size()), 0);
if (result != 0) {
UTF16ToUTF8 utf8_message;
if (utf8_message.convert(system_message) == ERROR_SUCCESS) {
out << message << ": " << utf8_message;
return;
}
break;
}
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
break; // Can't get error message, report error code instead.
buffer.resize(buffer.size() * 2);
}
} FMT_CATCH(...) {}
fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32.
}
#endif // FMT_USE_WINDOWS_H
FMT_FUNC void format_system_error(
Writer &out, int error_code, StringRef message) FMT_NOEXCEPT{
FMT_TRY{
internal::MemoryBuffer<char, internal::INLINE_BUFFER_SIZE> buffer;
buffer.resize(internal::INLINE_BUFFER_SIZE);
for (;;) {
char *system_message = &buffer[0];
int result = safe_strerror(error_code, system_message, buffer.size());
if (result == 0) {
out << message << ": " << system_message;
return;
}
if (result != ERANGE)
break; // Can't get error message, report error code instead.
buffer.resize(buffer.size() * 2);
}
} FMT_CATCH(...) {}
fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32.
}
template <typename Char>
void internal::ArgMap<Char>::init(const ArgList &args) {
if (!map_.empty())
return;
typedef internal::NamedArg<Char> NamedArg;
const NamedArg *named_arg = 0;
bool use_values =
args.type(ArgList::MAX_PACKED_ARGS - 1) == internal::Arg::NONE;
if (use_values) {
for (unsigned i = 0;/*nothing*/; ++i) {
internal::Arg::Type arg_type = args.type(i);
switch (arg_type) {
case internal::Arg::NONE:
return;
case internal::Arg::NAMED_ARG:
named_arg = static_cast<const NamedArg*>(args.values_[i].pointer);
map_.push_back(Pair(named_arg->name, *named_arg));
break;
default:
/*nothing*/
;
}
}
return;
}
for (unsigned i = 0; i != ArgList::MAX_PACKED_ARGS; ++i) {
internal::Arg::Type arg_type = args.type(i);
if (arg_type == internal::Arg::NAMED_ARG) {
named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
map_.push_back(Pair(named_arg->name, *named_arg));
}
}
for (unsigned i = ArgList::MAX_PACKED_ARGS;/*nothing*/; ++i) {
switch (args.args_[i].type) {
case internal::Arg::NONE:
return;
case internal::Arg::NAMED_ARG:
named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
map_.push_back(Pair(named_arg->name, *named_arg));
break;
default:
/*nothing*/
;
}
}
}
template <typename Char>
void internal::FixedBuffer<Char>::grow(std::size_t) {
FMT_THROW(std::runtime_error("buffer overflow"));
}
FMT_FUNC Arg internal::FormatterBase::do_get_arg(
unsigned arg_index, const char *&error) {
Arg arg = args_[arg_index];
switch (arg.type) {
case Arg::NONE:
error = "argument index out of range";
break;
case Arg::NAMED_ARG:
arg = *static_cast<const internal::Arg*>(arg.pointer);
break;
default:
/*nothing*/
;
}
return arg;
}
FMT_FUNC void report_system_error(
int error_code, fmt::StringRef message) FMT_NOEXCEPT{
// 'fmt::' is for bcc32.
report_error(format_system_error, error_code, message);
}
#if FMT_USE_WINDOWS_H
FMT_FUNC void report_windows_error(
int error_code, fmt::StringRef message) FMT_NOEXCEPT{
// 'fmt::' is for bcc32.
report_error(internal::format_windows_error, error_code, message);
}
#endif
FMT_FUNC void print(std::FILE *f, CStringRef format_str, ArgList args) {
MemoryWriter w;
w.write(format_str, args);
std::fwrite(w.data(), 1, w.size(), f);
}
FMT_FUNC void print(CStringRef format_str, ArgList args) {
print(stdout, format_str, args);
}
FMT_FUNC void print_colored(Color c, CStringRef format, ArgList args) {
char escape[] = "\x1b[30m";
escape[3] = static_cast<char>('0' + c);
std::fputs(escape, stdout);
print(format, args);
std::fputs(RESET_COLOR, stdout);
}
template <typename Char>
void printf(BasicWriter<Char> &w, BasicCStringRef<Char> format, ArgList args);
FMT_FUNC int fprintf(std::FILE *f, CStringRef format, ArgList args) {
MemoryWriter w;
printf(w, format, args);
std::size_t size = w.size();
return std::fwrite(w.data(), 1, size, f) < size ? -1 : static_cast<int>(size);
}
#ifndef FMT_HEADER_ONLY
template struct internal::BasicData<void>;
// Explicit instantiations for char.
template void internal::FixedBuffer<char>::grow(std::size_t);
template void internal::ArgMap<char>::init(const ArgList &args);
template void PrintfFormatter<char>::format(CStringRef format);
template int internal::CharTraits<char>::format_float(
char *buffer, std::size_t size, const char *format,
unsigned width, int precision, double value);
template int internal::CharTraits<char>::format_float(
char *buffer, std::size_t size, const char *format,
unsigned width, int precision, long double value);
// Explicit instantiations for wchar_t.
template void internal::FixedBuffer<wchar_t>::grow(std::size_t);
template void internal::ArgMap<wchar_t>::init(const ArgList &args);
template void PrintfFormatter<wchar_t>::format(WCStringRef format);
template int internal::CharTraits<wchar_t>::format_float(
wchar_t *buffer, std::size_t size, const wchar_t *format,
unsigned width, int precision, double value);
template int internal::CharTraits<wchar_t>::format_float(
wchar_t *buffer, std::size_t size, const wchar_t *format,
unsigned width, int precision, long double value);
#endif // FMT_HEADER_ONLY
} // namespace fmt
#ifdef _MSC_VER
# pragma warning(pop)
#endif
\ No newline at end of file
include/spdlog/fmt/bundled/format.h
View file @ 6128a87d
This source diff could not be displayed because it is too large. You can view the blob instead.
include/spdlog/fmt/bundled/ostream.cc
View file @ 6128a87d
/*
Formatting library for C++ - std::ostream support
Copyright (c) 2012 - 2016, Victor Zverovich
All rights reserved.
For the license information refer to format.h.
*/
// Commented out by spdlog to use header only
// #include "fmt/ostream.h"
namespace fmt {
namespace internal {
FMT_FUNC void write(std::ostream &os, Writer &w) {
const char *data = w.data();
typedef internal::MakeUnsigned<std::streamsize>::Type UnsignedStreamSize;
UnsignedStreamSize size = w.size();
UnsignedStreamSize max_size =
internal::to_unsigned((std::numeric_limits<std::streamsize>::max)());
do {
UnsignedStreamSize n = size <= max_size ? size : max_size;
os.write(data, static_cast<std::streamsize>(n));
data += n;
size -= n;
} while (size != 0);
}
}
FMT_FUNC void print(std::ostream &os, CStringRef format_str, ArgList args) {
MemoryWriter w;
w.write(format_str, args);
internal::write(os, w);
}
} // namespace fmt
/*
Formatting library for C++ - std::ostream support
Copyright (c) 2012 - 2016, Victor Zverovich
All rights reserved.
For the license information refer to format.h.
*/
#include "ostream.h"
namespace fmt {
namespace internal {
FMT_FUNC void write(std::ostream &os, Writer &w) {
const char *data = w.data();
typedef internal::MakeUnsigned<std::streamsize>::Type UnsignedStreamSize;
UnsignedStreamSize size = w.size();
UnsignedStreamSize max_size =
internal::to_unsigned((std::numeric_limits<std::streamsize>::max)());
do {
UnsignedStreamSize n = size <= max_size ? size : max_size;
os.write(data, static_cast<std::streamsize>(n));
data += n;
size -= n;
} while (size != 0);
}
}
FMT_FUNC void print(std::ostream &os, CStringRef format_str, ArgList args) {
MemoryWriter w;
w.write(format_str, args);
internal::write(os, w);
}
} // namespace fmt
\ No newline at end of file
include/spdlog/fmt/bundled/ostream.h
View file @ 6128a87d
/*
Formatting library for C++ - std::ostream support
Copyright (c) 2012 - 2016, Victor Zverovich
All rights reserved.
For the license information refer to format.h.
*/
#ifndef FMT_OSTREAM_H_
#define FMT_OSTREAM_H_
// Commented out by spdlog to use header only
// #include "fmt/format.h"
#include <ostream>
namespace fmt
{
namespace internal
{
template <class Char>
class FormatBuf : public std::basic_streambuf<Char>
{
private:
typedef typename std::basic_streambuf<Char>::int_type int_type;
typedef typename std::basic_streambuf<Char>::traits_type traits_type;
Buffer<Char> &buffer_;
Char *start_;
public:
FormatBuf(Buffer<Char> &buffer) : buffer_(buffer), start_(&buffer[0])
{
this->setp(start_, start_ + buffer_.capacity());
}
int_type overflow(int_type ch = traits_type::eof())
{
if (!traits_type::eq_int_type(ch, traits_type::eof()))
{
size_t buf_size = size();
buffer_.resize(buf_size);
buffer_.reserve(buf_size * 2);
start_ = &buffer_[0];
start_[buf_size] = traits_type::to_char_type(ch);
this->setp(start_+ buf_size + 1, start_ + buf_size * 2);
}
return ch;
}
size_t size() const
{
return to_unsigned(this->pptr() - start_);
}
};
Yes &convert(std::ostream &);
struct DummyStream : std::ostream
{
DummyStream(); // Suppress a bogus warning in MSVC.
// Hide all operator<< overloads from std::ostream.
void operator<<(Null<>);
};
No &operator<<(std::ostream &, int);
template<typename T>
struct ConvertToIntImpl<T, true>
{
// Convert to int only if T doesn't have an overloaded operator<<.
enum
{
value = sizeof(convert(get<DummyStream>() << get<T>())) == sizeof(No)
};
};
// Write the content of w to os.
void write(std::ostream &os, Writer &w);
} // namespace internal
// Formats a value.
template <typename Char, typename ArgFormatter, typename T>
void format_arg(BasicFormatter<Char, ArgFormatter> &f,
const Char *&format_str, const T &value)
{
internal::MemoryBuffer<Char, internal::INLINE_BUFFER_SIZE> buffer;
internal::FormatBuf<Char> format_buf(buffer);
std::basic_ostream<Char> output(&format_buf);
output << value;
BasicStringRef<Char> str(&buffer[0], format_buf.size());
typedef internal::MakeArg< BasicFormatter<Char> > MakeArg;
format_str = f.format(format_str, MakeArg(str));
}
/**
\rst
Prints formatted data to the stream *os*.
**Example**::
print(cerr, "Don't {}!", "panic");
\endrst
*/
FMT_API void print(std::ostream &os, CStringRef format_str, ArgList args);
FMT_VARIADIC(void, print, std::ostream &, CStringRef)
} // namespace fmt
#ifdef FMT_HEADER_ONLY
# include "ostream.cc"
#endif
#endif // FMT_OSTREAM_H_
/*
Formatting library for C++ - std::ostream support
Copyright (c) 2012 - 2016, Victor Zverovich
All rights reserved.
For the license information refer to format.h.
*/
#ifndef FMT_OSTREAM_H_
#define FMT_OSTREAM_H_
// commented out by spdlog
//#include "format.h"
#include <ostream>
namespace fmt {
namespace internal {
template <class Char>
class FormatBuf : public std::basic_streambuf<Char> {
private:
typedef typename std::basic_streambuf<Char>::int_type int_type;
typedef typename std::basic_streambuf<Char>::traits_type traits_type;
Buffer<Char> &buffer_;
Char *start_;
public:
FormatBuf(Buffer<Char> &buffer) : buffer_(buffer), start_(&buffer[0]) {
this->setp(start_, start_ + buffer_.capacity());
}
int_type overflow(int_type ch = traits_type::eof()) {
if (!traits_type::eq_int_type(ch, traits_type::eof())) {
size_t buf_size = size();
buffer_.resize(buf_size);
buffer_.reserve(buf_size * 2);
start_ = &buffer_[0];
start_[buf_size] = traits_type::to_char_type(ch);
this->setp(start_ + buf_size + 1, start_ + buf_size * 2);
}
return ch;
}
size_t size() const {
return to_unsigned(this->pptr() - start_);
}
};
Yes &convert(std::ostream &);
struct DummyStream : std::ostream {
DummyStream(); // Suppress a bogus warning in MSVC.
// Hide all operator<< overloads from std::ostream.
void operator<<(Null<>);
};
No &operator<<(std::ostream &, int);
template<typename T>
struct ConvertToIntImpl<T, true> {
// Convert to int only if T doesn't have an overloaded operator<<.
enum {
value = sizeof(convert(get<DummyStream>() << get<T>())) == sizeof(No)
};
};
// Write the content of w to os.
void write(std::ostream &os, Writer &w);
} // namespace internal
// Formats a value.
template <typename Char, typename ArgFormatter, typename T>
void format_arg(BasicFormatter<Char, ArgFormatter> &f,
const Char *&format_str, const T &value) {
internal::MemoryBuffer<Char, internal::INLINE_BUFFER_SIZE> buffer;
internal::FormatBuf<Char> format_buf(buffer);
std::basic_ostream<Char> output(&format_buf);
output << value;
BasicStringRef<Char> str(&buffer[0], format_buf.size());
typedef internal::MakeArg< BasicFormatter<Char> > MakeArg;
format_str = f.format(format_str, MakeArg(str));
}
/**
\rst
Prints formatted data to the stream *os*.
**Example**::
print(cerr, "Don't {}!", "panic");
\endrst
*/
FMT_API void print(std::ostream &os, CStringRef format_str, ArgList args);
FMT_VARIADIC(void, print, std::ostream &, CStringRef)
} // namespace fmt
#ifdef FMT_HEADER_ONLY
# include "ostream.cc"
#endif
#endif // FMT_OSTREAM_H_
\ No newline at end of file
include/spdlog/fmt/bundled/printf.h
View file @ 6128a87d
/*
Formatting library for C++
Copyright (c) 2012 - 2016, Victor Zverovich
All rights reserved.
For the license information refer to format.h.
*/
#ifndef FMT_PRINTF_H_
#define FMT_PRINTF_H_
#include <algorithm> // std::fill_n
#include <limits> // std::numeric_limits
#include "fmt/ostream.h"
namespace fmt
{
namespace internal
{
// Checks if a value fits in int - used to avoid warnings about comparing
// signed and unsigned integers.
template <bool IsSigned>
struct IntChecker
{
template <typename T>
static bool fits_in_int(T value)
{
unsigned max = std::numeric_limits<int>::max();
return value <= max;
}
static bool fits_in_int(bool)
{
return true;
}
};
template <>
struct IntChecker<true>
{
template <typename T>
static bool fits_in_int(T value)
{
return value >= std::numeric_limits<int>::min() &&
value <= std::numeric_limits<int>::max();
}
static bool fits_in_int(int)
{
return true;
}
};
class PrecisionHandler : public ArgVisitor<PrecisionHandler, int>
{
public:
void report_unhandled_arg()
{
FMT_THROW(FormatError("precision is not integer"));
}
template <typename T>
int visit_any_int(T value)
{
if (!IntChecker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
FMT_THROW(FormatError("number is too big"));
return static_cast<int>(value);
}
};
// IsZeroInt::visit(arg) returns true iff arg is a zero integer.
class IsZeroInt : public ArgVisitor<IsZeroInt, bool>
{
public:
template <typename T>
bool visit_any_int(T value)
{
return value == 0;
}
};
template <typename T, typename U>
struct is_same
{
enum { value = 0 };
};
template <typename T>
struct is_same<T, T>
{
enum { value = 1 };
};
// An argument visitor that converts an integer argument to T for printf,
// if T is an integral type. If T is void, the argument is converted to
// corresponding signed or unsigned type depending on the type specifier:
// 'd' and 'i' - signed, other - unsigned)
template <typename T = void>
class ArgConverter : public ArgVisitor<ArgConverter<T>, void>
{
private:
internal::Arg &arg_;
wchar_t type_;
FMT_DISALLOW_COPY_AND_ASSIGN(ArgConverter);
public:
ArgConverter(internal::Arg &arg, wchar_t type)
: arg_(arg), type_(type) {}
void visit_bool(bool value)
{
if (type_ != 's')
visit_any_int(value);
}
template <typename U>
void visit_any_int(U value)
{
bool is_signed = type_ == 'd' || type_ == 'i';
using internal::Arg;
typedef typename internal::Conditional<
is_same<T, void>::value, U, T>::type TargetType;
if (sizeof(TargetType) <= sizeof(int))
{
// Extra casts are used to silence warnings.
if (is_signed)
{
arg_.type = Arg::INT;
arg_.int_value = static_cast<int>(static_cast<TargetType>(value));
}
else
{
arg_.type = Arg::UINT;
typedef typename internal::MakeUnsigned<TargetType>::Type Unsigned;
arg_.uint_value = static_cast<unsigned>(static_cast<Unsigned>(value));
}
}
else
{
if (is_signed)
{
arg_.type = Arg::LONG_LONG;
// glibc's printf doesn't sign extend arguments of smaller types:
// std::printf("%lld", -42); // prints "4294967254"
// but we don't have to do the same because it's a UB.
arg_.long_long_value = static_cast<LongLong>(value);
}
else
{
arg_.type = Arg::ULONG_LONG;
arg_.ulong_long_value =
static_cast<typename internal::MakeUnsigned<U>::Type>(value);
}
}
}
};
// Converts an integer argument to char for printf.
class CharConverter : public ArgVisitor<CharConverter, void>
{
private:
internal::Arg &arg_;
FMT_DISALLOW_COPY_AND_ASSIGN(CharConverter);
public:
explicit CharConverter(internal::Arg &arg) : arg_(arg) {}
template <typename T>
void visit_any_int(T value)
{
arg_.type = internal::Arg::CHAR;
arg_.int_value = static_cast<char>(value);
}
};
// Checks if an argument is a valid printf width specifier and sets
// left alignment if it is negative.
class WidthHandler : public ArgVisitor<WidthHandler, unsigned>
{
private:
FormatSpec &spec_;
FMT_DISALLOW_COPY_AND_ASSIGN(WidthHandler);
public:
explicit WidthHandler(FormatSpec &spec) : spec_(spec) {}
void report_unhandled_arg()
{
FMT_THROW(FormatError("width is not integer"));
}
template <typename T>
unsigned visit_any_int(T value)
{
typedef typename internal::IntTraits<T>::MainType UnsignedType;
UnsignedType width = static_cast<UnsignedType>(value);
if (internal::is_negative(value))
{
spec_.align_ = ALIGN_LEFT;
width = 0 - width;
}
unsigned int_max = std::numeric_limits<int>::max();
if (width > int_max)
FMT_THROW(FormatError("number is too big"));
return static_cast<unsigned>(width);
}
};
} // namespace internal
/**
\rst
A ``printf`` argument formatter based on the `curiously recurring template
pattern <http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern>`_.
To use `~fmt::BasicPrintfArgFormatter` define a subclass that implements some
or all of the visit methods with the same signatures as the methods in
`~fmt::ArgVisitor`, for example, `~fmt::ArgVisitor::visit_int()`.
Pass the subclass as the *Impl* template parameter. When a formatting
function processes an argument, it will dispatch to a visit method
specific to the argument type. For example, if the argument type is
``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass
will be called. If the subclass doesn't contain a method with this signature,
then a corresponding method of `~fmt::BasicPrintfArgFormatter` or its
superclass will be called.
\endrst
*/
template <typename Impl, typename Char>
class BasicPrintfArgFormatter : public internal::ArgFormatterBase<Impl, Char>
{
private:
void write_null_pointer()
{
this->spec().type_ = 0;
this->write("(nil)");
}
typedef internal::ArgFormatterBase<Impl, Char> Base;
public:
/**
\rst
Constructs an argument formatter object.
*writer* is a reference to the output writer and *spec* contains format
specifier information for standard argument types.
\endrst
*/
BasicPrintfArgFormatter(BasicWriter<Char> &writer, FormatSpec &spec)
: internal::ArgFormatterBase<Impl, Char>(writer, spec) {}
/** Formats an argument of type ``bool``. */
void visit_bool(bool value)
{
FormatSpec &fmt_spec = this->spec();
if (fmt_spec.type_ != 's')
return this->visit_any_int(value);
fmt_spec.type_ = 0;
this->write(value);
}
/** Formats a character. */
void visit_char(int value)
{
const FormatSpec &fmt_spec = this->spec();
BasicWriter<Char> &w = this->writer();
if (fmt_spec.type_ && fmt_spec.type_ != 'c')
w.write_int(value, fmt_spec);
typedef typename BasicWriter<Char>::CharPtr CharPtr;
CharPtr out = CharPtr();
if (fmt_spec.width_ > 1)
{
Char fill = ' ';
out = w.grow_buffer(fmt_spec.width_);
if (fmt_spec.align_ != ALIGN_LEFT)
{
std::fill_n(out, fmt_spec.width_ - 1, fill);
out += fmt_spec.width_ - 1;
}
else
{
std::fill_n(out + 1, fmt_spec.width_ - 1, fill);
}
}
else
{
out = w.grow_buffer(1);
}
*out = static_cast<Char>(value);
}
/** Formats a null-terminated C string. */
void visit_cstring(const char *value)
{
if (value)
Base::visit_cstring(value);
else if (this->spec().type_ == 'p')
write_null_pointer();
else
this->write("(null)");
}
/** Formats a pointer. */
void visit_pointer(const void *value)
{
if (value)
return Base::visit_pointer(value);
this->spec().type_ = 0;
write_null_pointer();
}
/** Formats an argument of a custom (user-defined) type. */
void visit_custom(internal::Arg::CustomValue c)
{
BasicFormatter<Char> formatter(ArgList(), this->writer());
const Char format_str[] = {'}', 0};
const Char *format = format_str;
c.format(&formatter, c.value, &format);
}
};
/** The default printf argument formatter. */
template <typename Char>
class PrintfArgFormatter
: public BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char>
{
public:
/** Constructs an argument formatter object. */
PrintfArgFormatter(BasicWriter<Char> &w, FormatSpec &s)
: BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char>(w, s) {}
};
/** This template formats data and writes the output to a writer. */
template <typename Char, typename ArgFormatter = PrintfArgFormatter<Char> >
class PrintfFormatter : private internal::FormatterBase
{
private:
BasicWriter<Char> &writer_;
void parse_flags(FormatSpec &spec, const Char *&s);
// Returns the argument with specified index or, if arg_index is equal
// to the maximum unsigned value, the next argument.
internal::Arg get_arg(
const Char *s,
unsigned arg_index = (std::numeric_limits<unsigned>::max)());
// Parses argument index, flags and width and returns the argument index.
unsigned parse_header(const Char *&s, FormatSpec &spec);
public:
/**
\rst
Constructs a ``PrintfFormatter`` object. References to the arguments and
the writer are stored in the formatter object so make sure they have
appropriate lifetimes.
\endrst
*/
explicit PrintfFormatter(const ArgList &args, BasicWriter<Char> &w)
: FormatterBase(args), writer_(w) {}
/** Formats stored arguments and writes the output to the writer. */
FMT_API void format(BasicCStringRef<Char> format_str);
};
template <typename Char, typename AF>
void PrintfFormatter<Char, AF>::parse_flags(FormatSpec &spec, const Char *&s)
{
for (;;)
{
switch (*s++)
{
case '-':
spec.align_ = ALIGN_LEFT;
break;
case '+':
spec.flags_ |= SIGN_FLAG | PLUS_FLAG;
break;
case '0':
spec.fill_ = '0';
break;
case ' ':
spec.flags_ |= SIGN_FLAG;
break;
case '#':
spec.flags_ |= HASH_FLAG;
break;
default:
--s;
return;
}
}
}
template <typename Char, typename AF>
internal::Arg PrintfFormatter<Char, AF>::get_arg(const Char *s,
unsigned arg_index)
{
(void)s;
const char *error = 0;
internal::Arg arg = arg_index == std::numeric_limits<unsigned>::max() ?
next_arg(error) : FormatterBase::get_arg(arg_index - 1, error);
if (error)
FMT_THROW(FormatError(!*s ? "invalid format string" : error));
return arg;
}
template <typename Char, typename AF>
unsigned PrintfFormatter<Char, AF>::parse_header(
const Char *&s, FormatSpec &spec)
{
unsigned arg_index = std::numeric_limits<unsigned>::max();
Char c = *s;
if (c >= '0' && c <= '9')
{
// Parse an argument index (if followed by '$') or a width possibly
// preceded with '0' flag(s).
unsigned value = internal::parse_nonnegative_int(s);
if (*s == '$') // value is an argument index
{
++s;
arg_index = value;
}
else
{
if (c == '0')
spec.fill_ = '0';
if (value != 0)
{
// Nonzero value means that we parsed width and don't need to
// parse it or flags again, so return now.
spec.width_ = value;
return arg_index;
}
}
}
parse_flags(spec, s);
// Parse width.
if (*s >= '0' && *s <= '9')
{
spec.width_ = internal::parse_nonnegative_int(s);
}
else if (*s == '*')
{
++s;
spec.width_ = internal::WidthHandler(spec).visit(get_arg(s));
}
return arg_index;
}
template <typename Char, typename AF>
void PrintfFormatter<Char, AF>::format(BasicCStringRef<Char> format_str)
{
const Char *start = format_str.c_str();
const Char *s = start;
while (*s)
{
Char c = *s++;
if (c != '%') continue;
if (*s == c)
{
write(writer_, start, s);
start = ++s;
continue;
}
write(writer_, start, s - 1);
FormatSpec spec;
spec.align_ = ALIGN_RIGHT;
// Parse argument index, flags and width.
unsigned arg_index = parse_header(s, spec);
// Parse precision.
if (*s == '.')
{
++s;
if ('0' <= *s && *s <= '9')
{
spec.precision_ = static_cast<int>(internal::parse_nonnegative_int(s));
}
else if (*s == '*')
{
++s;
spec.precision_ = internal::PrecisionHandler().visit(get_arg(s));
}
}
using internal::Arg;
Arg arg = get_arg(s, arg_index);
if (spec.flag(HASH_FLAG) && internal::IsZeroInt().visit(arg))
spec.flags_ &= ~internal::to_unsigned<int>(HASH_FLAG);
if (spec.fill_ == '0')
{
if (arg.type <= Arg::LAST_NUMERIC_TYPE)
spec.align_ = ALIGN_NUMERIC;
else
spec.fill_ = ' '; // Ignore '0' flag for non-numeric types.
}
// Parse length and convert the argument to the required type.
using internal::ArgConverter;
switch (*s++)
{
case 'h':
if (*s == 'h')
ArgConverter<signed char>(arg, *++s).visit(arg);
else
ArgConverter<short>(arg, *s).visit(arg);
break;
case 'l':
if (*s == 'l')
ArgConverter<fmt::LongLong>(arg, *++s).visit(arg);
else
ArgConverter<long>(arg, *s).visit(arg);
break;
case 'j':
ArgConverter<intmax_t>(arg, *s).visit(arg);
break;
case 'z':
ArgConverter<std::size_t>(arg, *s).visit(arg);
break;
case 't':
ArgConverter<std::ptrdiff_t>(arg, *s).visit(arg);
break;
case 'L':
// printf produces garbage when 'L' is omitted for long double, no
// need to do the same.
break;
default:
--s;
ArgConverter<void>(arg, *s).visit(arg);
}
// Parse type.
if (!*s)
FMT_THROW(FormatError("invalid format string"));
spec.type_ = static_cast<char>(*s++);
if (arg.type <= Arg::LAST_INTEGER_TYPE)
{
// Normalize type.
switch (spec.type_)
{
case 'i':
case 'u':
spec.type_ = 'd';
break;
case 'c':
// TODO: handle wchar_t
internal::CharConverter(arg).visit(arg);
break;
}
}
start = s;
// Format argument.
AF(writer_, spec).visit(arg);
}
write(writer_, start, s);
}
template <typename Char>
void printf(BasicWriter<Char> &w, BasicCStringRef<Char> format, ArgList args)
{
PrintfFormatter<Char>(args, w).format(format);
}
/**
\rst
Formats arguments and returns the result as a string.
**Example**::
std::string message = fmt::sprintf("The answer is %d", 42);
\endrst
*/
inline std::string sprintf(CStringRef format, ArgList args)
{
MemoryWriter w;
printf(w, format, args);
return w.str();
}
FMT_VARIADIC(std::string, sprintf, CStringRef)
inline std::wstring sprintf(WCStringRef format, ArgList args)
{
WMemoryWriter w;
printf(w, format, args);
return w.str();
}
FMT_VARIADIC_W(std::wstring, sprintf, WCStringRef)
/**
\rst
Prints formatted data to the file *f*.
**Example**::
fmt::fprintf(stderr, "Don't %s!", "panic");
\endrst
*/
FMT_API int fprintf(std::FILE *f, CStringRef format, ArgList args);
FMT_VARIADIC(int, fprintf, std::FILE *, CStringRef)
/**
\rst
Prints formatted data to ``stdout``.
**Example**::
fmt::printf("Elapsed time: %.2f seconds", 1.23);
\endrst
*/
inline int printf(CStringRef format, ArgList args)
{
return fprintf(stdout, format, args);
}
FMT_VARIADIC(int, printf, CStringRef)
/**
\rst
Prints formatted data to the stream *os*.
**Example**::
fprintf(cerr, "Don't %s!", "panic");
\endrst
*/
inline int fprintf(std::ostream &os, CStringRef format_str, ArgList args)
{
MemoryWriter w;
printf(w, format_str, args);
internal::write(os, w);
return static_cast<int>(w.size());
}
FMT_VARIADIC(int, fprintf, std::ostream &, CStringRef)
} // namespace fmt
#endif // FMT_PRINTF_H_
/*
Formatting library for C++
Copyright (c) 2012 - 2016, Victor Zverovich
All rights reserved.
For the license information refer to format.h.
*/
#ifndef FMT_PRINTF_H_
#define FMT_PRINTF_H_
#include <algorithm> // std::fill_n
#include <limits> // std::numeric_limits
#include "ostream.h"
namespace fmt {
namespace internal {
// Checks if a value fits in int - used to avoid warnings about comparing
// signed and unsigned integers.
template <bool IsSigned>
struct IntChecker {
template <typename T>
static bool fits_in_int(T value) {
unsigned max = std::numeric_limits<int>::max();
return value <= max;
}
static bool fits_in_int(bool) {
return true;
}
};
template <>
struct IntChecker<true> {
template <typename T>
static bool fits_in_int(T value) {
return value >= std::numeric_limits<int>::min() &&
value <= std::numeric_limits<int>::max();
}
static bool fits_in_int(int) {
return true;
}
};
class PrecisionHandler : public ArgVisitor<PrecisionHandler, int> {
public:
void report_unhandled_arg() {
FMT_THROW(FormatError("precision is not integer"));
}
template <typename T>
int visit_any_int(T value) {
if (!IntChecker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
FMT_THROW(FormatError("number is too big"));
return static_cast<int>(value);
}
};
// IsZeroInt::visit(arg) returns true iff arg is a zero integer.
class IsZeroInt : public ArgVisitor<IsZeroInt, bool> {
public:
template <typename T>
bool visit_any_int(T value) {
return value == 0;
}
};
template <typename T, typename U>
struct is_same {
enum { value = 0 };
};
template <typename T>
struct is_same<T, T> {
enum { value = 1 };
};
// An argument visitor that converts an integer argument to T for printf,
// if T is an integral type. If T is void, the argument is converted to
// corresponding signed or unsigned type depending on the type specifier:
// 'd' and 'i' - signed, other - unsigned)
template <typename T = void>
class ArgConverter : public ArgVisitor<ArgConverter<T>, void> {
private:
internal::Arg &arg_;
wchar_t type_;
FMT_DISALLOW_COPY_AND_ASSIGN(ArgConverter);
public:
ArgConverter(internal::Arg &arg, wchar_t type)
: arg_(arg), type_(type) {}
void visit_bool(bool value) {
if (type_ != 's')
visit_any_int(value);
}
template <typename U>
void visit_any_int(U value) {
bool is_signed = type_ == 'd' || type_ == 'i';
using internal::Arg;
typedef typename internal::Conditional<
is_same<T, void>::value, U, T>::type TargetType;
if (sizeof(TargetType) <= sizeof(int)) {
// Extra casts are used to silence warnings.
if (is_signed) {
arg_.type = Arg::INT;
arg_.int_value = static_cast<int>(static_cast<TargetType>(value));
}
else {
arg_.type = Arg::UINT;
typedef typename internal::MakeUnsigned<TargetType>::Type Unsigned;
arg_.uint_value = static_cast<unsigned>(static_cast<Unsigned>(value));
}
}
else {
if (is_signed) {
arg_.type = Arg::LONG_LONG;
// glibc's printf doesn't sign extend arguments of smaller types:
// std::printf("%lld", -42); // prints "4294967254"
// but we don't have to do the same because it's a UB.
arg_.long_long_value = static_cast<LongLong>(value);
}
else {
arg_.type = Arg::ULONG_LONG;
arg_.ulong_long_value =
static_cast<typename internal::MakeUnsigned<U>::Type>(value);
}
}
}
};
// Converts an integer argument to char for printf.
class CharConverter : public ArgVisitor<CharConverter, void> {
private:
internal::Arg &arg_;
FMT_DISALLOW_COPY_AND_ASSIGN(CharConverter);
public:
explicit CharConverter(internal::Arg &arg) : arg_(arg) {}
template <typename T>
void visit_any_int(T value) {
arg_.type = internal::Arg::CHAR;
arg_.int_value = static_cast<char>(value);
}
};
// Checks if an argument is a valid printf width specifier and sets
// left alignment if it is negative.
class WidthHandler : public ArgVisitor<WidthHandler, unsigned> {
private:
FormatSpec &spec_;
FMT_DISALLOW_COPY_AND_ASSIGN(WidthHandler);
public:
explicit WidthHandler(FormatSpec &spec) : spec_(spec) {}
void report_unhandled_arg() {
FMT_THROW(FormatError("width is not integer"));
}
template <typename T>
unsigned visit_any_int(T value) {
typedef typename internal::IntTraits<T>::MainType UnsignedType;
UnsignedType width = static_cast<UnsignedType>(value);
if (internal::is_negative(value)) {
spec_.align_ = ALIGN_LEFT;
width = 0 - width;
}
unsigned int_max = std::numeric_limits<int>::max();
if (width > int_max)
FMT_THROW(FormatError("number is too big"));
return static_cast<unsigned>(width);
}
};
} // namespace internal
/**
\rst
A ``printf`` argument formatter based on the `curiously recurring template
pattern <http://en.wikipedia.org/wiki/Curiously_recurring_template_pattern>`_.
To use `~fmt::BasicPrintfArgFormatter` define a subclass that implements some
or all of the visit methods with the same signatures as the methods in
`~fmt::ArgVisitor`, for example, `~fmt::ArgVisitor::visit_int()`.
Pass the subclass as the *Impl* template parameter. When a formatting
function processes an argument, it will dispatch to a visit method
specific to the argument type. For example, if the argument type is
``double`` then the `~fmt::ArgVisitor::visit_double()` method of a subclass
will be called. If the subclass doesn't contain a method with this signature,
then a corresponding method of `~fmt::BasicPrintfArgFormatter` or its
superclass will be called.
\endrst
*/
template <typename Impl, typename Char>
class BasicPrintfArgFormatter : public internal::ArgFormatterBase<Impl, Char> {
private:
void write_null_pointer() {
this->spec().type_ = 0;
this->write("(nil)");
}
typedef internal::ArgFormatterBase<Impl, Char> Base;
public:
/**
\rst
Constructs an argument formatter object.
*writer* is a reference to the output writer and *spec* contains format
specifier information for standard argument types.
\endrst
*/
BasicPrintfArgFormatter(BasicWriter<Char> &writer, FormatSpec &spec)
: internal::ArgFormatterBase<Impl, Char>(writer, spec) {}
/** Formats an argument of type ``bool``. */
void visit_bool(bool value) {
FormatSpec &fmt_spec = this->spec();
if (fmt_spec.type_ != 's')
return this->visit_any_int(value);
fmt_spec.type_ = 0;
this->write(value);
}
/** Formats a character. */
void visit_char(int value) {
const FormatSpec &fmt_spec = this->spec();
BasicWriter<Char> &w = this->writer();
if (fmt_spec.type_ && fmt_spec.type_ != 'c')
w.write_int(value, fmt_spec);
typedef typename BasicWriter<Char>::CharPtr CharPtr;
CharPtr out = CharPtr();
if (fmt_spec.width_ > 1) {
Char fill = ' ';
out = w.grow_buffer(fmt_spec.width_);
if (fmt_spec.align_ != ALIGN_LEFT) {
std::fill_n(out, fmt_spec.width_ - 1, fill);
out += fmt_spec.width_ - 1;
}
else {
std::fill_n(out + 1, fmt_spec.width_ - 1, fill);
}
}
else {
out = w.grow_buffer(1);
}
*out = static_cast<Char>(value);
}
/** Formats a null-terminated C string. */
void visit_cstring(const char *value) {
if (value)
Base::visit_cstring(value);
else if (this->spec().type_ == 'p')
write_null_pointer();
else
this->write("(null)");
}
/** Formats a pointer. */
void visit_pointer(const void *value) {
if (value)
return Base::visit_pointer(value);
this->spec().type_ = 0;
write_null_pointer();
}
/** Formats an argument of a custom (user-defined) type. */
void visit_custom(internal::Arg::CustomValue c) {
BasicFormatter<Char> formatter(ArgList(), this->writer());
const Char format_str[] = { '}', 0 };
const Char *format = format_str;
c.format(&formatter, c.value, &format);
}
};
/** The default printf argument formatter. */
template <typename Char>
class PrintfArgFormatter
: public BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char> {
public:
/** Constructs an argument formatter object. */
PrintfArgFormatter(BasicWriter<Char> &w, FormatSpec &s)
: BasicPrintfArgFormatter<PrintfArgFormatter<Char>, Char>(w, s) {}
};
/** This template formats data and writes the output to a writer. */
template <typename Char, typename ArgFormatter = PrintfArgFormatter<Char> >
class PrintfFormatter : private internal::FormatterBase {
private:
BasicWriter<Char> &writer_;
void parse_flags(FormatSpec &spec, const Char *&s);
// Returns the argument with specified index or, if arg_index is equal
// to the maximum unsigned value, the next argument.
internal::Arg get_arg(
const Char *s,
unsigned arg_index = (std::numeric_limits<unsigned>::max)());
// Parses argument index, flags and width and returns the argument index.
unsigned parse_header(const Char *&s, FormatSpec &spec);
public:
/**
\rst
Constructs a ``PrintfFormatter`` object. References to the arguments and
the writer are stored in the formatter object so make sure they have
appropriate lifetimes.
\endrst
*/
explicit PrintfFormatter(const ArgList &args, BasicWriter<Char> &w)
: FormatterBase(args), writer_(w) {}
/** Formats stored arguments and writes the output to the writer. */
FMT_API void format(BasicCStringRef<Char> format_str);
};
template <typename Char, typename AF>
void PrintfFormatter<Char, AF>::parse_flags(FormatSpec &spec, const Char *&s) {
for (;;) {
switch (*s++) {
case '-':
spec.align_ = ALIGN_LEFT;
break;
case '+':
spec.flags_ |= SIGN_FLAG | PLUS_FLAG;
break;
case '0':
spec.fill_ = '0';
break;
case ' ':
spec.flags_ |= SIGN_FLAG;
break;
case '#':
spec.flags_ |= HASH_FLAG;
break;
default:
--s;
return;
}
}
}
template <typename Char, typename AF>
internal::Arg PrintfFormatter<Char, AF>::get_arg(const Char *s,
unsigned arg_index) {
(void)s;
const char *error = 0;
internal::Arg arg = arg_index == std::numeric_limits<unsigned>::max() ?
next_arg(error) : FormatterBase::get_arg(arg_index - 1, error);
if (error)
FMT_THROW(FormatError(!*s ? "invalid format string" : error));
return arg;
}
template <typename Char, typename AF>
unsigned PrintfFormatter<Char, AF>::parse_header(
const Char *&s, FormatSpec &spec) {
unsigned arg_index = std::numeric_limits<unsigned>::max();
Char c = *s;
if (c >= '0' && c <= '9') {
// Parse an argument index (if followed by '$') or a width possibly
// preceded with '0' flag(s).
unsigned value = internal::parse_nonnegative_int(s);
if (*s == '$') { // value is an argument index
++s;
arg_index = value;
}
else {
if (c == '0')
spec.fill_ = '0';
if (value != 0) {
// Nonzero value means that we parsed width and don't need to
// parse it or flags again, so return now.
spec.width_ = value;
return arg_index;
}
}
}
parse_flags(spec, s);
// Parse width.
if (*s >= '0' && *s <= '9') {
spec.width_ = internal::parse_nonnegative_int(s);
}
else if (*s == '*') {
++s;
spec.width_ = internal::WidthHandler(spec).visit(get_arg(s));
}
return arg_index;
}
template <typename Char, typename AF>
void PrintfFormatter<Char, AF>::format(BasicCStringRef<Char> format_str) {
const Char *start = format_str.c_str();
const Char *s = start;
while (*s) {
Char c = *s++;
if (c != '%') continue;
if (*s == c) {
write(writer_, start, s);
start = ++s;
continue;
}
write(writer_, start, s - 1);
FormatSpec spec;
spec.align_ = ALIGN_RIGHT;
// Parse argument index, flags and width.
unsigned arg_index = parse_header(s, spec);
// Parse precision.
if (*s == '.') {
++s;
if ('0' <= *s && *s <= '9') {
spec.precision_ = static_cast<int>(internal::parse_nonnegative_int(s));
}
else if (*s == '*') {
++s;
spec.precision_ = internal::PrecisionHandler().visit(get_arg(s));
}
}
using internal::Arg;
Arg arg = get_arg(s, arg_index);
if (spec.flag(HASH_FLAG) && internal::IsZeroInt().visit(arg))
spec.flags_ &= ~internal::to_unsigned<int>(HASH_FLAG);
if (spec.fill_ == '0') {
if (arg.type <= Arg::LAST_NUMERIC_TYPE)
spec.align_ = ALIGN_NUMERIC;
else
spec.fill_ = ' '; // Ignore '0' flag for non-numeric types.
}
// Parse length and convert the argument to the required type.
using internal::ArgConverter;
switch (*s++) {
case 'h':
if (*s == 'h')
ArgConverter<signed char>(arg, *++s).visit(arg);
else
ArgConverter<short>(arg, *s).visit(arg);
break;
case 'l':
if (*s == 'l')
ArgConverter<fmt::LongLong>(arg, *++s).visit(arg);
else
ArgConverter<long>(arg, *s).visit(arg);
break;
case 'j':
ArgConverter<intmax_t>(arg, *s).visit(arg);
break;
case 'z':
ArgConverter<std::size_t>(arg, *s).visit(arg);
break;
case 't':
ArgConverter<std::ptrdiff_t>(arg, *s).visit(arg);
break;
case 'L':
// printf produces garbage when 'L' is omitted for long double, no
// need to do the same.
break;
default:
--s;
ArgConverter<void>(arg, *s).visit(arg);
}
// Parse type.
if (!*s)
FMT_THROW(FormatError("invalid format string"));
spec.type_ = static_cast<char>(*s++);
if (arg.type <= Arg::LAST_INTEGER_TYPE) {
// Normalize type.
switch (spec.type_) {
case 'i':
case 'u':
spec.type_ = 'd';
break;
case 'c':
// TODO: handle wchar_t
internal::CharConverter(arg).visit(arg);
break;
}
}
start = s;
// Format argument.
AF(writer_, spec).visit(arg);
}
write(writer_, start, s);
}
template <typename Char>
void printf(BasicWriter<Char> &w, BasicCStringRef<Char> format, ArgList args) {
PrintfFormatter<Char>(args, w).format(format);
}
/**
\rst
Formats arguments and returns the result as a string.
**Example**::
std::string message = fmt::sprintf("The answer is %d", 42);
\endrst
*/
inline std::string sprintf(CStringRef format, ArgList args) {
MemoryWriter w;
printf(w, format, args);
return w.str();
}
FMT_VARIADIC(std::string, sprintf, CStringRef)
inline std::wstring sprintf(WCStringRef format, ArgList args) {
WMemoryWriter w;
printf(w, format, args);
return w.str();
}
FMT_VARIADIC_W(std::wstring, sprintf, WCStringRef)
/**
\rst
Prints formatted data to the file *f*.
**Example**::
fmt::fprintf(stderr, "Don't %s!", "panic");
\endrst
*/
FMT_API int fprintf(std::FILE *f, CStringRef format, ArgList args);
FMT_VARIADIC(int, fprintf, std::FILE *, CStringRef)
/**
\rst
Prints formatted data to ``stdout``.
**Example**::
fmt::printf("Elapsed time: %.2f seconds", 1.23);
\endrst
*/
inline int printf(CStringRef format, ArgList args) {
return fprintf(stdout, format, args);
}
FMT_VARIADIC(int, printf, CStringRef)
/**
\rst
Prints formatted data to the stream *os*.
**Example**::
fprintf(cerr, "Don't %s!", "panic");
\endrst
*/
inline int fprintf(std::ostream &os, CStringRef format_str, ArgList args) {
MemoryWriter w;
printf(w, format_str, args);
internal::write(os, w);
return static_cast<int>(w.size());
}
FMT_VARIADIC(int, fprintf, std::ostream &, CStringRef)
} // namespace fmt
#endif // FMT_PRINTF_H_
\ No newline at end of file
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment